Foot valve for well casings



P. B. TURPIN, 111.

l FOOT VALVE FOR WELL CASINGS.

APPLICATxoN HLED 1111111.15. 1919. RENEwEn 1uNE 7.1921.

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., WITNESSES P, B. TURRIN, 1R. FOOT VALVE FOR WELL CASINGS. APPLICATIONFILED MAR 6, 1919-RENEWED JUNE 7, 1921.

43,359 A mem-,ed Jan. M1922..

3 SHEETS-SHEET 2.

P. B. TURP.|N,'1H.

Y FOOT VALVE FOR WELL CASINGS.

APPLICATION FILED MAR` @i 1919. RENEWED JUNE 7. 192i.'

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PEBCIVAL B. TURPIEN, JR., F Tlil, FLORIDA..

F002? VALVE EUR @TELL CSINGS.

Application filed March 6,

i 'o di?, w ,tom t 'may concern.:

lie it known that l, ljnncrven B. Timmie, Jr. a citizen of the UnitedlStates, and a resident or Tampa, in the county of Hillsborough andState ci Florida, have invented a new and improved Foot Valve iior TWellCasings, oi` which the following is a Jruil, clear, and exactdescription.

'lhe present invention relates to new and useful improvements in valves,and pertains more particularly to a valve adapted ttor use in vellcasings, and whereby the use of which eliminates the necessity ofemploying a drop pipe ordinarily necessary in well construction.

The primary object oi the invention is to construct valve in such amanner that it may be removably and adjustably secured within a wellcasing.

A further object of the invention is to provide a toot valve which iscapable of being positioned at any desired point in the well casing.

il ,further object of the invention is to provide a 'loot valve whichwhen positioned,

rovides an air-tight joint between the body ot' the valve and the wellcasing, thus greatly increasing the ei'riciency ot the valve.

A further object oi' the invention is to so construct a valvev of thischaracter that all of its several parts are readily removable andaccessible for the purpose of renewal or repair.

Reference is to be had to the accompanying drawings forming a part ofthis specilication in which like characters indicate corresponding partsin all the views, and in which- Figure 1 is a vertical sectional viewof: a well casing with the foot valve inserted therein;

Fig. 2 is a similar view showing the toot valve secured in place in awell casing;

Fig. 3 is a transverse sectional view on the line 3-3 oi Fig. 1;

Fig. i is a transverse sectional view on the line 4.-4: 0f 1Fig. l;

Fig. 5 is a detail view oi' a portion of the retaining wedge;

Fig. 6 is a sectional view of the tool and its centering device used inthe removal of the foot valve from the casing;

rig, 7 is a sectional view on the line 7-7 of Fig. 6;

Referring more particularly to the drawings, the reference character 10designates Specication of Letters etent.

f, Serial No. 2505996. Renewed .lune i921.

a well casing, which is oi' the ordinary construction and forms noparticular part of the present invention.

,f-idapted to be secured within the well casing 10, is a casing 11, oneend of which is tapered or reduced as at 12, said reduced end e 12 beingprovided with three equidistantly spaced slots 13, which extendthroughout the reduced end 12, as shown in Figures l and 2. rllhe upperextremity of the. reduced end 12 is provided with a screw thread le, andthreaded thereon is ring 15 provided on its periphery with a groove 1G,the purposebi which will be hereinafter described.

rlhe lower end oi the casing 11 is provided with screw thread 17, andengaging with said screw thread is the screw-threaded eX- tension 13 o'fa valve chamber 19. rlhe valve chamber 19 is provided with a valve seat20, and adapted to engage said valve seat 20, is a valve 21, the valve21 being provided with a depending stem 22, which forms means by whichsaid valve is guided in its vertical movement. Secured to the outersurface of the valve chamber 19, in equidistantly spaced relation, arespring fingers 23, which, as shown, are adapted to engage the innersuriiace of the well casing 10 to frictionally maintain the casing 11within the casing 10 inthe operation of setting the casing 11. Thecasing 11 is provided near its lower end, with two parallel grooves 2e,and secured within said grooves by means ci? spring wire bands or thelike, 25, is an elastic jacket 26, which though preferably formed ofrubber, be 'formed of any other suitable material. This jacket 26, issecured to the upper end ot the casing 11, means or a spring band 27,which lies within the aforementioned groove 16.

Projecting inwardly from the casing 11, at the base of the reduced endl2, is a spider 28, the center portion o1c which is screwthreaded as at29, Jfor the reception of a suitable tool 30. Suitably mounted on thereduced end 12 or the casing 11, is a split ring 31, which issubstantially wedge-'shaped in cross section, and as shown in Figs. 1and 2, is provided with inwardly projecting lugs 32 adapted to receivethe arms 33 of a spider 34. As shown in Fig. 3, theseinwardly-projecting lugs 32 are adapted to slide within the slots 13 oi'the reduced end 12, thus preventing rotary movement of the ring 31 withrespect to the reduced end 12 of the casing ll. 'lhis spider 33 isprovided with a screwthreaded central portion 35, which has greaterinternal dimensions than the screwthreaded portion 29 of the spider'28,and said screw-threaded portion 35 is adapted to receivethe'screvv-threaded end 36 of the tool 37 shown in l? ig. 5. lt willxbenoted that the casing il. is of a smaller diameter1 than the internaldiameter of the Well casing l0, and is freely movable longitudinallythereof except for the slight pressure exerted by the spring fingers 23.

ln securing the casing l1 Within the Well casing l0, after the casing llhas been properly positioned, the tool 38 is passed through the opening35 in the spider 33 and its screwthreaded end 39 is engaged with thescrewthreaded opening 29 of the spider 28. U pon rotation of the tool38, it will be seen that the ring 3l will be-moved longitudinaly of tbeyreduced end l2 of the casing ll, by reason of engagement of the shoulderIl() of the tool 33 y with the top face of the body portion 3A of the Vsider B movement of the rino- 3l longitu'dinally of thereduced end l2 ofthe casingvll, said ring Will be moved into the space between thecasingll and the Well casing l0, asvshovvn in F 2, forcing the elasticjacket 26 into engagement With the interior face of the Well casing l0.This positioning of the parts not only serves as a means by which thecasing l1 is secured Within the Y casing l0, but also provides aWater-tight joint between the casing ll and the Well casing l0, andpreventingthe passage of water by the casing ll, except when it entersthrough the space provided by the valve 2l disengaging the seat 20,which is occasioned by the operation of a suitable pumping device notforming a part of this invention.

When it is desired to remove the casing` ll from the Well casing l0, thetool 37 shown in Figs. 6 and 7, is inserted into the Well casing l0, andits screw-threaded end 36 is engaged Withthe thread 35 in the spider 3A.It will now be seen that through the medium of the tool 37, the ring31'is freely movable along the reduced end l2 of the casing l1,

and out of engagement WithA the inner sur! face of the well casing lO.

This tool 37 is provided with a rigidV disk 4-0, and secured to theupper face of said disk is a plurality ofV resilient fingersv lll, Theselingers Ll-l are adapted to engage the inner surface of the casing andserve to center the tool 37 in such a manner that Vits screw-threadedend 36 will properly engage the threads 35.

From the foregoing description, it Will be apparent that the presentlinvention provides a foot valve for Well casing, which may be securedWithin the Well casing at any desired point, and, furthermore, when thefoot valve is secured Within the casing, a Waterreosse tight joint isprovided and maintained between the foot valve and the Well casing l0.

Having thus described the invention, What j l. A foot valve for Wellcasings comprising a tubular bodyportion having a tapered end, a valveseat removably secured in the end of the body portion opposite to saidtapered end, a flexible sleeve surrounding said body portion, and meansinterposed betvveen the tapered end of the body portion and saidflexible sleeve and movable longitudinally of said bodyv portion forforcing the flexible sleeve intov engagement with the interior of theWell casing for providing` an air-tight joint between said body portionand said vvell casing.

A foot valve for well casings comprising a tubular body portion having atapered end, a valve seat removably secured in the end of the bodyportion opposite to said tapered end, a flexible sleeve surroundingvsaid ybody portion, and an annular tapered collar surrounding thetapered end of the body portion and movable longitudinally thereof forengaging the flexible sleeve with the inner surface of' the Well casingfor providing an air-tight joint.

3. A foot valve for Vvvell casings comprising a tubular body portionhaving aV reduced end, a valve carrying` element provided With a taperedseat removably secured in one end of said'body portion, and a taperedringembracing said reduced end of the tubular body'portion and movablelongitudinally thereof for securing the foot valve Within a Well casing.

A, A foot valve for well casings comprising a valve casing of smallerdiameter than the well casing, securing means movable longitudinally ofthe valve casing and into Iengagement with the Well casing for securingthe valve casing inl place, and means engaging the valve casing and saidlongitudinally movable securing means for moving the latter'longitudinally of the valve casing.

5. A foot valve for Well casings comprising a slotted valve/casing, anannular Wedgeshaped member movable longitudinally of the valve casingfor engagement With the Well casing, means carried by said annularWedge-shaped member and projecting through `the slots'in the valvecasing, vand means engaging the valve casing and the means carried bythe Wedge-shaped memberI and lying Within the slots of the valve casingfor .moving the annular Wedge-shaped member longitudinally of the valvecasing.

6. A lfoot valve for Well casing-s comprising a valve casing, an elasticcovering surrounding` said valve casing, and means movablelongitudinally'of said casing for causing engagement of the elasticcovering With the Well casing to retain the valve casing in placetherein.

7. loot valve for Well casings comprising a valve casing, an elasticcovering surrounding said valve casing, and means movable with respectto said casing for securing the valve casing in place in the Well casingand maintain the elastic covering in Contact Witli the Well casing toprovide an air-tight joint.

8. A, oot va ve for Well casings comprising a valve chamber having areduced slotted end an annular Wedge movable longitudinally oi" saidreduced end and into engagement with the Well casing for securinv' tlicvalve casing in place Within the Well casing, means for moving theannular Wedge. longitudinally of said reduced end, and means lor guidingsaid annular wedge in its movement.

9. A device of the character described comprising a valve casing, avalve seat removably secured in one end of said casing, a valve adaptedfor engagement with said valve seat7 resilient members carried by saidvalve seat on the exterior thereof, an annular Wedge movablelongitudinally of the valve easing7 and means engageable wit-li thevalve casing and with arms carried by said annular Wedge for moving thelatter longitudinally of tlie valve casing.

l0. ln a 'loot valve for well casings, a valve chamber7 a pliablecovering for said chamber, and means interposed between tlie chamber andthe pliable covering securing said valve casing Within the Well casing,said securing means serving in combination with the pliable covering toform a Watertiglit joint between the wall casing and the valve casing.

ll. A foot valve for Well casings comprising a valve casing of smallerdiameter than the ivell easing and having a reduced end, a valve carriedby the lower end of said valve casinr, a pliable covering for said valvecasing, a tapered ring movable longitudinally of the reduced end of saidvalve casing` between the valve casing and tlie pliable covering forsecuring the valve casing in the Well casing, and means :for moving saidtapered rin g PERGlVAL B. TURPN, Jn.

